diff --git a/polyjuice.sh b/polyjuice.sh
index 2990b57..77e14b3 100644
--- a/polyjuice.sh
+++ b/polyjuice.sh
@@ -2,6 +2,16 @@
 
 current_dir=$(dirname "$0")
 
+[[ ! -f "$HOME/.zshenv" ]] || touch "$HOME/.zshenv"
+if cat "$HOME/.zshenv" | grep -q "\$TERMINAL_POLYJUICE"; then
+    if $(dirname "$0") != "$TERMINAL_POLYJUICE"; then
+        line_number=$(grep -n "\$TERMINAL_POLYJUICE" "$HOME/.zshenv" | cut -d: -f1)
+        sed -i "${line_number}c\\export TERMINAL_POLYJUICE=$current_dir" "$HOME/.zshenv"
+    fi
+else
+    echo "export TERMINAL_POLYJUICE=$current_dir" >> "$HOME/.zshenv"
+fi
+
 if [ "$1" = "zsh" ]; then
     if [ $# -gt 1 ]; then
         for i in "${@:2}"; do
diff --git a/zsh/zshrc b/zsh/zshrc
index a6a0251..60db86f 100644
--- a/zsh/zshrc
+++ b/zsh/zshrc
@@ -120,3 +120,5 @@ source $ZSH/oh-my-zsh.sh
 
 # To customize prompt, run `p10k configure` or edit ~/.p10k.zsh.
 [[ ! -f ~/.p10k.zsh ]] || source ~/.p10k.zsh
+
+typeset -g POWERLEVEL9K_COMMAND_EXECUTION_TIME_CONTENT_EXPANSION='${$((P9K_COMMAND_DURATION_SECONDS < 1 ? int(1000 * P9K_COMMAND_DURATION_SECONDS) : -1)):/-1/$P9K_CONTENT}${${$((P9K_COMMAND_DURATION_SECONDS < 1)):/1/ms}:/0/}'
\ No newline at end of file